High performance concrete with steel slag as admixture and aggregate and preparation method thereof
A concrete and aggregate technology, applied in the direction of climate sustainability, sustainable waste treatment, solid waste management, etc., can solve problems such as few researches, achieve simple preparation technology, good durability, and reduce production costs
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Embodiment 1
[0024] (1) Among the concrete raw materials, the mass percentages of cementitious materials, aggregates and mixing water are 21.2%, 71.9% and 6.9% respectively; %, steel slag fine powder 10% and slag fine powder 10%; coarse aggregate particle size 5~30mm crushed stone; medium aggregate: steel slag sand particle size 5mm~10mm, partially replace crushed stone, its dosage is 30%; Fine aggregate: the river sand fineness modulus is 2.6, and the sand rate is 38%, that is, the mass percentage of each component of the aggregate is: crushed stone 43.4%, steel slag sand 18.6% and river sand 38%; the quality of high-efficiency water reducer is 2.5% of the mass of the cementitious material, and the water-binder ratio is 0.33.
[0025] (2) Dry the granulated converter steel slag and slag until the moisture content is less than 1%; screen the dried granulated converter steel slag and slag into two grades, grade I is steel slag and slag with a particle size of less than 5mm, and grind them ...
Embodiment 2
[0034] (1) Among the concrete raw materials, the mass percentages of cementitious materials, aggregates and mixing water are 16.4%, 76.7% and 6.9% respectively; , steel slag powder 15%, slag powder 15%; coarse aggregate particle size of 5-30mm crushed stone; medium aggregate: steel slag sand with particle size of 5mm-10mm, partially replacing crushed stone, its dosage is 40%; Aggregate: The river sand fineness modulus is 2.6, and the sand rate is 35%, that is, the mass percentage of each component of the aggregate is: crushed stone 39%, steel slag sand 26% and river sand 35%; the water reducer is a cementitious material The mass percentage is 2.5%, and the water-binder ratio is 0.43.
[0035] (2) Dry the granulated converter steel slag and slag until the moisture content is less than 1%; screen the dried granulated converter steel slag and slag into two grades, grade I is steel slag and slag with a particle size of less than 5mm, and grind them Steel slag fine powder and slag...
Embodiment 3
[0044] (1) Among the concrete raw materials, the mass percentages of cementitious material, aggregate and water are 15.6%, 77.5% and 6.9% respectively; Micro powder 20% and slag micro powder 20%; coarse aggregate particle size 5~30mm crushed stone; medium aggregate: steel slag sand particle size 5mm~10mm, partially replace crushed stone, its dosage is 50%; fine aggregate : The river sand fineness modulus is 2.8, and the sand rate is 37%, that is, the mass percentage of each component of the aggregate is: crushed stone 31.5%, steel slag sand 31.5% and river sand 37%; the water reducing agent is the cementitious material mass percentage 1.5%, the water-binder ratio is 0.44.
[0045] (2) Dry the granulated converter steel slag and slag until the moisture content is less than 1%; sieve the dried steel slag into two grades, grade I is steel slag and slag with a particle size of less than 5mm, and grind it into steel slag powder and slag powder , Grade II is steel slag with a parti...
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